This trial will evaluate the effectiveness of standard adjuvant treatment with CMF chemotherapy versus treatment with weekly docetaxel in patients with high-risk breast cancer who are 65 years of age and older or are poor candidates for anthracycline-containing regimens. This CMF regimen has decreased dose intensity and may be slightly less active in patients with metastatic breast cancer; however, the patient population in this trial has tolerated more intensive CMF regimens poorly in other trials.